A liquid mixture containing 35.0 mole% acetone and 65.0 mole% water is to be partially vaporized to produce a vapor that is 70.0 mole% acetone and a residual liquid that is 30.0 mole% acetone.
(a) Suppose the process is to be carried out continuously, and at steady state the feed rate to the evaporator is 10.0 kmol/h. Calculate the molar flow rates of the product streams and the temperature (°C) and pressure (mm Hg) of the system.
(b) Suppose the vaporization unit has been built, operations have begun, and the product stream flow rates and compositions are measured. Themeasured acetone content of the vapor streamis 70.0 mole % and the product stream flow rates have the values calculated in Part (a). However, the liquid product stream is found to contain 22.3 mole% acetone. Your colleague suggests that the analytical lab made a mistake in determining the composition of the liquid. Give at least five other possible reasons for the discrepancy. [Think about assumptions made in obtaining the solution to Part (a).]